Perhaps you should try some spelling variations:
thu sach » thuat sach, thuoc sach, thu hoach
hieu van » hieu va, thien van, lieu va
luc van » luoc van, luu van, duc van
han tai » hang tai, nhan tai, van tai
han tri » van tri, thanh tri, chan troi
dau luc » cau luc, dau luan, dau nuoc
van dau » van dao, phan dau
nang xa » nang x, lang xa, nang ma
tu sach » su sach, te sach, tu cach
y nang » ky nang, ly nang, v nang
cua cu » cua chu, cua cau, cua su

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: ((thu sach) or (tu sach)) y nang xa hoi. hieu van dau luc van ((han tri) OR (han tai)) cua cu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((thu sach) OR (tu sach)) y nang xa hoi. hieu van dau luc van ((han tri) OR (han tai)) cua cu.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((thu sach) or (tu sach)) y nang xa hoi. hieu van dau luc van ((han tri) OR (han tai)) cua cu".
• Adding a wildcard symbol may retrieve word variants: ((thu sach) or (tu sach)) y nang xa hoi. hieu van dau luc van ((han tri) OR (han tai)) cua cu*.